Spring Data JPA 回滚如果保存方法抛出异常

Question

Problem solved : Go to last entry

I am trying to test my method's rollback function if any exception has thrown from save method of crudrepository. I have a main loop which scans my file and for each row then insert a record into table. I realized that when any exception occured, loop breaks but rollback operation doesn't work. What am I missing? Thanks in advance

Main Code

@Component
public class ExcelReader {

    @PostConstruct
    @Transactional
    public void openExcel() throws IOException {
        int insertedRowCount = 0;
        int updatedRowCount = 0;
        int exceptionRowCount = 0;

        //some codes

        while (true) {
                //some logic
                City2CityEntity city2CityEntity = new City2CityEntity();


                city2CityRepository.save(city2CityEntity);
                if(insertedRowCount == 500){
                   throw new RuntimeException();
                }
                insertedRowCount++;
            }
        }
        System.out.println(insertedRowCount + " number of rows inserted");
        System.out.println(updatedRowCount + " number of rows skipped");
        System.out.println(exceptionRowCount + " couldn't inserted");
    }
}

Repository

@Repository
public interface City2CityRepository extends CrudRepository<City2CityEntity, Long> {
    Iterable<City2CityEntity> findAll();

    City2CityEntity findByCompanyAndOrgAndDst(String company, String org, String dst);
}

Entity

@Entity
@Table(name = "xxx_berkin_city2city", schema = "CRANE_AT", catalog = "")
public class City2CityEntity {
   //getter setters and fields
}

After 501. record inserted, I threw an exception.

Answer 1

@Transactional(rollbackFor = Exception.class)

This is the answer above. I found here: What is difference between @Transactional(rollbackFor = Exception.class) and @Transactional(propagation=Propagation.REQUIRED)

Answer 2

Edit : I solved problem. I removed @PostConstruct annotation on top of openExcel function. Then used ExcelReader bean with using applicationContext.getBean() method from main class. Now everything works perfectly. I didn't have to use any parameter for @Transactional annotation anymore.

@SpringBootApplication
@EnableConfigurationProperties({FileProperties.class, TargetProperties.class})
public class Application {
    public static void main(String[] args) {

        ApplicationContext applicationContext = SpringApplication.run(Application.class, args);

        ExcelReader excelReader = applicationContext.getBean(ExcelReader.class);
        try {
            excelReader.openExcel();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

Answer 3

尝试使用下一个：

@Transactional(rollbackFor = Exception.class) // your exception